公开(公告)号：US20230129980A1

公开(公告)日：2023-04-27

申请号：US17835229

申请日：2022-06-08

Applicant: Samsung Display Co., Ltd.

Inventor： HYOMIN KO ,  ILSOO OH ,  BORA LEE ,  ILLHUN CHO ,  MINJI KIM

IPC: C07C211/54 ,  C07D307/91 ,  C07D333/76 ,  C07D209/82 ,  C07D405/12 ,  C07D409/12 ,  C07F5/02 ,  H01L51/00

Abstract: A light emitting element includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region, wherein the hole transport region includes a first hole transport layer disposed adjacent to the first electrode and including a first amine compound having a first refractive index, a second hole transport layer disposed between the first hole transport layer and the emission layer, and including a second amine compound having a second refractive index greater than the first refractive index, and a third hole transport layer disposed between the second hole transport layer and the emission layer, and including a third amine compound having a third refractive index less than the second refractive index, thereby having high luminous efficiency.

公开(公告)号：US20220173346A1

公开(公告)日：2022-06-02

申请号：US17380547

申请日：2021-07-20

Applicant: Samsung Display Co., Ltd.

Inventor： HYOMIN KO ,  ILSOO OH

IPC: H01L51/50

Abstract: Provided is an organic electroluminescence device including a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer disposed adjacent to the first electrode, the first hole transport layer including a first organic compound having a first dielectric constant and a second hole transport layer disposed between the first hole transport layer and the emission layer, the second hole transport layer including a second organic having a second dielectric constant which is greater than the first dielectric constant.

公开(公告)号：US20240237466A9

公开(公告)日：2024-07-11

申请号：US18365663

申请日：2023-08-04

Applicant: Samsung Display Co., Ltd.

Inventor： SANG GYUN KIM ,  HYOMIN KO ,  ILHA SONG ,  ILSOO OH

IPC: H10K59/38 ,  G02B27/01 ,  H10K59/122 ,  H10K102/00

CPC classification number: H10K59/38 ,  G02B27/0172 ,  H10K59/122 ,  H10K2102/351

Abstract: Provided is a display panel including a circuit layer and a display element layer above the circuit layer. The display element layer may include a first light-emitting element, a second light-emitting element, and a pixel-defining film that are spaced apart in a direction perpendicular to the thickness direction. The first light-emitting element may include an optical auxiliary layer and a conductive layer sequentially stacked between the first electrode and the hole transport region, and the second light-emitting element may omit the optical auxiliary layer and the conductive layer. The optical auxiliary layer may be spaced apart from the hole transport region with the conductive layer interposed therebetween.

公开(公告)号：US20240138225A1

公开(公告)日：2024-04-25

申请号：US18365663

申请日：2023-08-03

Applicant: Samsung Display Co., Ltd.

Inventor： SANG GYUN KIM ,  HYOMIN KO ,  ILHA SONG ,  ILSOO OH

IPC: H10K59/38 ,  G02B27/01 ,  H10K59/122 ,  H10K102/00

CPC classification number: H10K59/38 ,  G02B27/0172 ,  H10K59/122 ,  H10K2102/351

Abstract: Provided is a display panel including a circuit layer and a display element layer above the circuit layer. The display element layer may include a first light-emitting element, a second light-emitting element, and a pixel-defining film that are spaced apart in a direction perpendicular to the thickness direction. The first light-emitting element may include an optical auxiliary layer and a conductive layer sequentially stacked between the first electrode and the hole transport region, and the second light-emitting element may omit the optical auxiliary layer and the conductive layer. The optical auxiliary layer may be spaced apart from the hole transport region with the conductive layer interposed therebetween.

公开(公告)号：US20220255003A1

公开(公告)日：2022-08-11

申请号：US17588041

申请日：2022-01-28

Applicant: Samsung Display Co., Ltd.

Inventor： SANGHYUN HAN ,  DONGJUN KIM ,  MINJI KIM ,  HANKYU PAK ,  EUNJAE JEONG ,  SOHEE JO ,  ILSOO OH ,  ILLHUN CHO

IPC: H01L51/00

Abstract: A light-emitting element includes a first electrode, a second electrode, and at least one functional layer disposed between the first electrode and the second electrode and including an amine compound represented by Formula 1. The light-emitting element may exhibit high emission efficiency and improved service life characteristics:

公开(公告)号：US20250107318A1

公开(公告)日：2025-03-27

申请号：US18970179

申请日：2024-12-05

Applicant: Samsung Display Co., Ltd.

Inventor： HYOMIN KO ,  ILSOO OH

IPC: H10K50/15 ,  H10K50/11 ,  H10K50/852 ,  H10K59/12 ,  H10K59/35 ,  H10K85/30 ,  H10K85/60 ,  H10K101/40 ,  H10K102/00

Abstract: Provided is an organic electroluminescence device including a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer disposed adjacent to the first electrode, the first hole transport layer including a first organic compound having a first dielectric constant and a second hole transport layer disposed between the first hole transport layer and the emission layer, the second hole transport layer including a second organic having a second dielectric constant which is greater than the first dielectric constant.

公开(公告)号：US20240023430A1

公开(公告)日：2024-01-18

申请号：US18311769

申请日：2023-05-03

Applicant: Samsung Display Co., Ltd.

Inventor： ILSOO OH ,  HYOMIN KO ,  BORA LEE

IPC: H10K85/60 ,  H10K50/858 ,  H10K59/35 ,  C09K11/06

CPC classification number: H10K85/633 ,  H10K50/858 ,  H10K50/15 ,  C09K11/06 ,  H10K59/35

Abstract: A light emitting element includes a first electrode, a hole transport region provided on the first electrode, an emission layer provided on the hole transport region, an electron transport region provided on the emission layer, and a second electrode provided on the electron transport region, wherein the hole transport region includes a first hole transport layer which is provided to be adjacent to the first electrode and includes a first amine compound represented by Formula 1, and a second hole transport layer which is provided between then first hole transport layer and the emission layer and has a larger refractive index than that of the first hole transport layer, and the first hole transport layer has a conductivity of about 6.0×10−5 cm/(V·sec) to about 10.0×10−4 cm/(V·sec).